Inventor · disambiguated record
Shigetaka Hamada
Also filed as: HAMADA SHIGETAKA
24 granted patents·5 pending applications·20 citations·filing 2003–2023
91Inventor score
Files withTOYOTA MOTOR CO LTD14LUMENTUM JAPAN INC8HAMADA SHIGETAKA3LUMENTUM OPERATIONS LLC1MANABE KOTA1
Top patents by PatentIndex Score
29 records- 0194US12100929B2Semiconductor optical device and method for manufacturing the sameLUMENTUM JAPAN INC·Filed 2023·Granted Sep 24, 2024·2 cites·20 claims
- 0285US11817674B2Semiconductor optical device and method for manufacturing the sameLUMENTUM JAPAN INC·Filed 2020·Granted Nov 14, 2023·1 cites·7 claims
- 0384US11552448B2Semiconductor optical amplifier integrated laserLUMENTUM JAPAN INC·Filed 2020·Granted Jan 10, 2023·1 cites·14 claims
- 0481US11912154B2Power management system, server, and power supply and demand adjustment methodTOYOTA MOTOR CO LTD·Filed 2021·Granted Feb 27, 2024·1 cites·10 claims
- 0580US12218480B2Semiconductor optical amplifier integrated laserLUMENTUM JAPAN INC·Filed 2023·Granted Feb 4, 2025·0 cites·20 claims
- 0678US10340532B2Separator for fuel cell, fuel cell and method of manufacturing fuel cellTOYOTA MOTOR CO LTD·Filed 2016·Granted Jul 2, 2019·1 cites·16 claims
- 0778US8932775B2Method and apparatus for controlling the operation of a fuel cellHAMADA SHIGETAKA·Filed 2010·Granted Jan 13, 2015·3 cites·15 claims
- 0878US8034498B2Fuel cell systemTOYOTA MOTOR CO LTD·Filed 2006·Granted Oct 11, 2011·4 cites·7 claims
- 0977US11710940B2Semiconductor optical deviceLUMENTUM JAPAN INC·Filed 2022·Granted Jul 25, 2023·0 cites·20 claims
- 1067US12477839B2Semiconductor photodetectorLUMENTUM OPERATIONS LLC·Filed 2023·Granted Nov 18, 2025·0 cites·20 claims
- 1167US12046870B2Optical semiconductor deviceLUMENTUM JAPAN INC·Filed 2022·Granted Jul 23, 2024·0 cites·20 claims
- 1267US8603689B2Fuel cell system which measures impedanceMANABE KOTA·Filed 2006·Granted Dec 10, 2013·1 cites·6 claims
- 1365US11283242B2Semiconductor optical deviceLUMENTUM JAPAN INC·Filed 2019·Granted Mar 22, 2022·0 cites·20 claims
- 1464US7597977B2Diagnostic method for fuel cellTOYOTA MOTOR CO LTD·Filed 2003·Granted Oct 6, 2009·6 cites·9 claims
- 1564US2023011034A1Fuel cell systemTOYOTA MOTOR CO LTD·Filed 2022·Application pending·0 cites
- 1659US12194878B2Server and power management methodTOYOTA MOTOR CO LTD·Filed 2021·Granted Jan 14, 2025·0 cites·9 claims
- 1759US12027822B2Optical semiconductor deviceLUMENTUM JAPAN INC·Filed 2021·Granted Jul 2, 2024·0 cites·10 claims
- 1859US11870116B2Power management system, server, and power supply and demand adjustment methodTOYOTA MOTOR CO LTD·Filed 2021·Granted Jan 9, 2024·0 cites·5 claims
- 1958US12024043B2Server and power management methodTOYOTA MOTOR CO LTD·Filed 2021·Granted Jul 2, 2024·0 cites·12 claims
- 2056US11764377B2Fuel cell systemTOYOTA MOTOR CO LTD·Filed 2022·Granted Sep 19, 2023·0 cites·6 claims
- 2153US11710983B2Electric power system and serverTOYOTA MOTOR CO LTD·Filed 2021·Granted Jul 25, 2023·0 cites·6 claims
- 2252US11929612B2Server and power management methodTOYOTA MOTOR CO LTD·Filed 2021·Granted Mar 12, 2024·0 cites·15 claims
- 2351US12237685B2Power management system, server, and power supply and demand adjustmentTOYOTA MOTOR CO LTD·Filed 2022·Granted Feb 25, 2025·0 cites·9 claims
- 2451US2013177827A1Separator for fuel cell, fuel cell and method of manufacturing fuel cellOKABE HIROKI·Filed 2010·Application pending·0 cites
- 2549US8101312B2Fuel cell stack with improved resistance to floodingHAMADA SHIGETAKA·Filed 2007·Granted Jan 24, 2012·0 cites·6 claims
- 2649US2022200285A1Electric power system and serverTOYOTA MOTOR CO LTD·Filed 2021·Application pending·0 cites
- 2749US2022200021A1Power management system, server, and power supply and demand adjustment methodTOYOTA MOTOR CO LTD·Filed 2021·Application pending·0 cites
- 2846US10553881B2Fuel cellHAMADA SHIGETAKA·Filed 2011·Granted Feb 4, 2020·0 cites·5 claims
- 2942US2013315531A1Optical semiconductor and optical moduleOCLARO JAPAN INC·Filed 2013·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Shigetaka Hamada files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →